Lifting hook



FIG. 1 is a front top perspective view of an embodiment of the claimed design;

FIG. 2 is a rear bottom perspective view of the claimed design of FIG. 1;

FIG. 3 is a front elevation view of the claimed design of FIG. 1;

FIG. 4 is a rear elevation view of the claimed design of FIG. 1;

FIG. 5 is a right side view of the claimed design of FIG. 1;

FIG. 6 is a left side view of the claimed design of FIG. 1; and,

FIG. 7 is a top view of the claimed design of FIG. 1.

The broken lines depict portions of the lifting hook in which the design is embodied that are not part of the claimed design. 

CLAIM We claim the ornamental design for a lifting hook, as shown and described. 